baber/WOPTO huggingface dataset:
Patent GB-1065026-A (GB)
Title: Improvements in or relating to colour television systems and colour television receivers for use therein
IPC: H04N11/16
Filed: 1964-04-08
Abstract: 1,065,026. Colour televisions. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. April 8, 1964 [April 10, 1963], No. 14590/64. Heading H4F N.T.S.C.-type signals are modified according to the P.A.L. method of transmission, whereby the phase of the I component of the colour sub-carrier is reversed for alternate lines, and in order to permit a switch at a receiver which restores the signal phase to be set in operation in the correct phase there is transmitted during the vertical flyback interval a series of special reference signals 4, Fig. 2, in addition to the normal colour synchronizing " bursts " 3 which follow the line synchronizing pulses 2. The reference signals are located on a direct voltage of approximately one half the maximum allowable sub-carrier amplitude, in order that they may be of substantial amplitude, and comprise oscillations of sub-carrier frequency which assume the phase of +Q and - Q in alternate lines. The phase of the normal synchronizing "bursts" remains fixed at +I. In a receiver the I and Q sub-carrier components are separated as illustrated in Fig. 3 by means of a delay demodulator 6, 7, 8, 9 and the additional reference signals produce outputs in the two channels as shown in Fig. 4. A single amplitude output A appears at the beginning and end of the series on each channel whilst intermediate outputs are of double amplitude in the I channel and zero in the Q channel. The I channel signal is used for controlling the switch operation and is selected by a synchronous demodulator operating at the +Q phase. Fig. 9 illustrates a receiver. The separated Q and I sub-carrier signals, which are in suppressed carrier form, are amplitude demodulated in stages 14 and 19, the required carrier being regenerated by an oscillator 12 (synchronized by the normal " bursts " at I phase) which is connected through a 90 degrees phase shifter 13 to stage 14 and through a phase reversing switch 18 to stage 19. Switch 18 is operated at line frequency by pulses 21. In accordance with the invention the switch is established in operation in the correct phase by the additional reference signals which are separated from the output of the I channel by a synchronous demodulator 24 supplied with a signal from oscillator 12 at the +Q phase over connection 26. To eliminate disturbance, by undesired signal components the connection before or after demodulator 24 may include a gate stage which is opened only during the vertical flyback interval, and the output of the demodulator may be applied to switch 18 via an amplitude discriminator. A more detailed circuit of a receiver is described with reference to Fig. 10 (not shown).
Patent GB-822279-A (GB)
Title: Organic boron compounds and liquid leaded motor fuel containing the same
IPC: C07F5/04
Filed: 1955-09-12
Abstract: Gasolines comprise up to 6 c.cs. of tetraethyl lead per U.S.A gallon, a halide scavenging agent and a boron compound having the general formula <FORM:0822279/III/1> wherein each R represents a C3-20 alpha or beta alkylene radical, the compound having not more than 25 carbon atoms and being present in an amount equivalent to 0.002 to 0.1% by weight of boron.  The preferred boron compounds are those in which each R represents a radical <FORM:0822279/III/2> wherein the R's are the same or different and are each hydrogen or a C1-6 alkyl group which group is preferably methyl.  There are named a number of such preferred esters, both symmetrical and asymmetrical, and also bis-beta glycol compounds alkyl-substituted at an alpha carbon atom, mixed alpha-beta-glycol compounds and a bis-alpha glycol compound. The boron compounds react readily with water to form a solid product and accordingly a solvent may be incorporated in the boron compound before or during the blending into the gasoline to facilitate solution.  The scavenging agent is preferably 1 theory of ethylene dibromide or 1 theory of ethylene dichloride and 1/2 theory of ethylene dichloride per theory of tetraethyl lead.  The gasolines may also comprise anti-oxidants, dyes, solvent oils or alcohols.  The preparation of the boron compounds is given (see Group IV (b)).ALSO:The invention comprises boric acid anhydride esters having the general formula <FORM:0822279/IV (a)/1> wherein each R is an alpha or beta alkylene radical containing 3-20 carbon atoms, the esters having not more than 25 carbon atoms in the molecule.  A preferred group of such esters is that wherein each R represents a radical <FORM:0822279/IV (a)/2> R1, R2, R3 and R4 being the same or different and representing hydrogen or a C1-6 alkyl group which group is preferably methyl.  There are named a number of such preferred esters, both symmetrical and asymmetrical and also bis-beta glycol esters alkyl substituted at an alpha-carbon atom, a bis-alpha glycol ester and mixed alpha- and beta-glycol esters. The invention also includes a process for the preparation of the esters as defined above comprising mixing in a 1:1 molar ratio boric acid and an alpha or beta glycol having 3-20 carbon atoms or an equimolar mixture of two glycols, heating the resulting mixture until liquid and continuing the heating to vaporize out 2 1/2 mols. of water, the glycol or glycols being such that the compound produced will not contain more than 25 carbon atoms in the molecule.  The removal of water is preferably effected by fractional or azeotropic distillation.  In examples, pentanediol-2:4 or 2-methyl pentanediol-2:4 is heated with an equimolar amount of boric acid to 70-75 DEG  C.; benzene is then added and the mixture further heated with azeotropic removal of water; the product is purified by repeated fractionation.  The anhydride esters, which react readily with water, may be used in gasolines (see Group III).
Patent GB-986101-A (GB)
Title: Improvements in cooling chambers
Inventor: RANKEN MICHAEL BRUCE FERNIE
IPC: A23L3/36
Filed: 1960-04-27
Abstract: 986,101. Freezing food. J. & E. HALL Ltd., and ELLIOTT BROS. (LONDON) Ltd. July 26, 1961 [April 27, 1960], No. 14711/60. Heading F4H. A thermally insulated cooling chamber with two conventional air coolers 7 comprises within the chamber an article loading zone for the reception of articles to be cooled, an article discharging zone, intermittently operable conveyer means for conveying the articles from the loading zone to the discharging zone and a closable inlet to the loading zone in the form of two swinging flaps 19 about an opening 18 in a side wall of the chamber. The articles to be cooled are open topped containers 11 with a flange 12 which are suitable for holding foods such as fish. The containers 11 pass through the opening 18 on a conveyer 27 on to a horizontally disposed, vertically movable platform 17 in the loading zone. When three containers are arranged on the platform 17, as shown in Fig. 4, the platform moves vertically downwards so that three more containers can be arranged on top of the three original containers. This is repeated until seven layers of containers are carried by the platform 17, which then moves vertically upwards to the position shown in Fig. 1. A pushing frame 14 actuated by a pair of hydraulic rams 13, transfers the containers 11 from the platform 17 on to a plurality of spaced supporting rails 10. The loading operation is repeated and a second batch of containers is transferred on to the rails moving the first batch of containers along the rails 10. This operation is repeated until the first batch reaches the discharging zone 28 where the containers are suspended in spaced relationship as shown in Fig. 5. The first batch of containers is then pushed on to a hoist 20 comprising seven spaced shelves 22 supported in a frame 23. Each shelf is formed in two parts so that a central gap 24 is formed therein. When the hoist is in its uppermost position, as shown in Fig. 3, the containers supported on the lowermost shelf 22 are substantially aligned with a rectangular outlet opening 25 provided with a second pair of hinged flaps 25. An endless chain conveyer between a pair of sprockets 29 has a pusher dog 32 attached to the chain, which pushes the first three containers off the shelf 22 on to a supporting platform 33 and through the opening 25 to a conveyer 34. The hoist is then lowered so that the second shelf is aligned with the opening 25, the chain having passed between the central gap 24. This operation is repeated until all the containers are removed from the hoist 20 which is then raised to the position shown in Fig. 3. The whole discharging operation is then repeated. The whole process is controlled by suitably positioned micro-switches (not illustrated).
Patent GB-700026-A (GB)
Title: Improvements in and relating to instruments for checking dimensions or tolerances
IPC: G01B3/44
Filed: 1951-06-21
Abstract: 700,026. Gauging-apparatus. MANUFACTURE DE MACHINES DU HAUT-RHIN SOC. ANON. June 21, 1951 [Jan. 10, 1951'], No. 14747/51. Class 106 (2) An instrument for checking dimensions or tolerances in machined parts, permitting classification of the parts into groups corresponding to different tolerances, comprises a lever E, Fig. 1, with electric contacts G' and having at its end a spring F with contacts G<SP>2</SP>, these contacts cooperating with fixed contacts A, C and B, D in such a manner that if the lever, operated e.g. by a longitudinally movable feeler, is rocked from the central position shown in response to a dimension of a part to be checked, firstly a contact G<SP>2</SP> and, when the angle through the lever is rocked increases, a contact G', touches an associated fixed contact, the contacts controlling circuits to illumine lamps characteristic of each tolerance. As shown in Fig. 4, the contacts G' are replaced by a triangular contact H<SP>1</SP>, and the lamps, of different colours, are illuminated through circuits controlled by the contacts of relays R, S, T, U.
Patent GB-1388672-A (GB)
Title: Liquefied gas storage container
IPC: F17C3/08
Filed: 1971-05-13
Abstract: 1388672 Storing liquefied gases BRITISH OXYGEN CO Ltd 11 May 1972 [13 May 1971] 14809/71 Heading F4P In a double-walled vacuum vessel, a heat pipe 16 is mounted vertically within the inner vessel 12 by means of chains 17, 18 to prevent stratification of the vessel contents. The heat-pipe comprises a thin walled copper cylinder 19 sealed at each end, lined internally with a wick 20 of, e.g. gas fibre and filled with a quantity under pressure of the same gas as that being stored in liquefied form in the vessel. Introduction of the liquefied gas through pipe 14 will cause partial liquefaction of the gas in pipe 16, the gas condensing on the wick 20. Any increase of temperature at a particular level in the liquefied gas in the vessel will cause some of the condensed gas to vaporize and re-condense elsewhere thus transferring heat away from that particular level. In this way a substantially uniform temperature can be maintained throughout the liquefied gas.
Patent GB-624542-A (GB)
Title: Improvements in or relating to receivers for multichannel pulse communication systems
IPC: G01R29/027
Filed: 1947-06-06
Abstract: 624,542. Multi-pulse radio signalling ; pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. June 6, 1947, No. 14993. Convention date, March 2, 1946. [Class 40 (v)] In a multi-channel receiver, Fig. 1, for timemodulated pulses, wherein synchronizing pulses are separated from the signal pulses in a marker separator 17, and the signal pulses and synchronizing pulses are fed to selector circuits 21 corresponding to the channels and converted into width-modulated pulses for the operation of integrating circuits 22 and utilization devices 23, each selector circuit 21 comprises a .multivibrator, Fig. 2, triggered by the synchronizing pulses and restored by the signal pulses in the corresponding channel. In the absence of a signal pulse the multivibrator is restored to its original condition after a time equal to the maximum time between a synchronizing pulse and a signal pulse of the selected channel, the time being determined by a resistor condenser combination 34, 31. Pulses of channels later than the desired one have no effect on the output of a valve 25, due to the valve being run at saturation point and pulses occurring before the desired channel pulses are prevented from restoring the multi-vibrator by an inductively tuned circuit 43, which on arrival of a synchronizing pulse sets up a blocking or negative undulation lasting for a time slightly less than the minimum time between synchronizing pulse and a desired signal pulse, and of such magnitude that pulses of other channels are insufficient to render conducting again valve 25, which is rendered non-conducting on the application of a synchronizing pulse to a normally cut-off valve 24. Any positive undulation is prevented by a diode 46 in parallel with the tuned circuit. The variable inductance 44, resistor 34 and condenser 31 are ganged together so as to effect simple channel selection.
Patent GB-959439-A (GB)
Title: Improvements in or relating to frequency doubling circuits
Inventor: MIDGLEY EDWARD
IPC: H03B19/16
Filed: 1960-04-28
Abstract: 959,439. Transistor harmonic generating circuits. TEXAS INSTRUMENTS Ltd. April 25, 1961 [April 28, 1960], No. 15030/60. Heading H3T. In a transistor frequency doubling circuit the waveform to be doubled in frequency is applied to a tuned circuit L1, C1 coupled to a centre - tapped secondary winding L2 which feeds a pair of diodes Dl, D2 connected as a full-wave rectifier. The diodes are selfbiased to the knee in their characteristics by means of adjustable resistor R2 which is shunted by decoupling condenser C4. The diodes feed into the emitter circuit of a common-base connected transistor VT1, the emitter of which is biased by means of resistor R3 and base by potentiometer R4, R5. The collector of the transistor is connected to a tap on circuit L3, C3 tuned to the second harmonic frequency, from which the output is obtained by means of coupling winding L4. In a modification (Fig. 2, not shown), the input is fed directly to the transistor via a condenser, the full-wave rectifier being omitted and harmonics generated by a diode in shunt with the transistor input. This diode is self-biased by means of a series resistor shunted by a decoupling condenser. The transistor may, in either case, be connected instead in the common-emitter manner, and may alternatively comprise an NPN transistor.
Patent GB-740016-A (GB)
Title: Improvements relating to hydraulic pit prop test apparatus
Inventor: FRYE COLIN MICHAEL
IPC: E21D15/46
Filed: 1953-05-29
Abstract: 740,016. Dynamometers. DOWTY HYDRAULIC. UNITS, Ltd., [formerly DOWTY AUTO UNITS, Ltd.]. May 28, 1954 [May 29, 1953], No. 15039/53. Class 106 (2). An apparatus for testing pit props comprises a hydraulic cylinder-and-piston 13, 14 for raising a platform 15 on which a prop to be tested is placed, and indicator means such as a pressure gauge for measuring the load applied to the prop when forced against the roof of the mine; the whole being so arranged that the cylinder-and-piston 13, 14 surrounds the lower end of the pit prop. A hand-operated pump 23 provides the necessary fluid pressure. A vertical column 20, outside the cylinder 13, carries a vertically adjustable guide-plate 21 for holding the prop to be tested coaxial with the piston and cylinder assembly. The whole apparatus is mounted on a skid-plate 11. The pit props may be of the hydraulic type incorporating relief valves designed to open at a pressure in excess of that at which the props are set against the roof of a mine.
Patent GB-834309-A (GB)
Title: Improvements in or relating to x-ray image intensifying apparatus
Inventor: GARTHWAITE ERNEST
IPC: H05G1/64
Filed: 1957-05-13
Abstract: 834,309. X-ray apparatus. MARCONI INSTRUMENTS Ltd. Jan. 20, 1958 [May 13, 1957], No. 15108/57. Class 98(1) The area of a fluorescent screen viewed by a television pick-up tube is varied by varying the ratio of the sizes of the images formed on the photo-cathode and on the adjacent target structure of the tube. As shown, the image on a fluorescent screen 4 is projected on to the photocathode 8 of an image orthicon pick-up tube 9 by an objective 7. When the angle of beam 3 of X-rays from source 1 is adjusted by lead diaphragm plates 5 to vary the area of the luminous patch on screen 4, magnetic lens coils 11, 12 are adjusted by potentiometers 14, 15 through ganged controls 6 and 16 so that the image received on the target structure 17 always just covers it without overlapping. By simultaneously varying the tube current by control 2 as the -angle of beam 3 is changed, the radiation is emitted at a constant dosage rate. Should the controls 6, 16 and 2 not be ganged, each is provided with a scale and pointed. Amplifier 18 produces a picture display 19.
Patent GB-496496-A (GB)
Title: Improvements in potato harvesting machines
IPC: A01D17/10
Filed: 1937-05-31
Abstract: 496,496. Endless-chain elevators. CAUDWELL, T. J. May 31, 1937, No. 15119. [Class 78 (i)] [Also in Group I] Potatoes lifted by a share 6 are directed on to a grid conveyer 7 which is shaken by passing over non - circular toothed wheels 11, and which delivers them on to a travelling riddle 12 formed by cross-bars carried by chains, each crossbar comprising a wooden lath covered by canvas, rubber or similar substance and provided at its leading edge with an upstanding flap of canvas, leather or other material. The spacing of the laths on the chains may be varied. The haulm is engaged by the flaps and discharged at the rear of the machine while the potatoes fall between the laths on to a horizontal part of a transverse delivery conveyer 24 extending between the upper and lower reaches of the riddle 12. The conveyer 24 comprises two endless chains with .cross-bars sheathed in rubber but at intervals cross-bars of the type used in the riddle 12 are provided. A shoot 34 directs potatoes falling through the upper part of the riddle on to the delivery conveyer. The potatoes are carried up the inclined part of the conveyer 24 to a cart. The share 6 is adjusted vertically by a hand lever 35 working over a notched sector 41 and connected by links 37 to the yoke 38 of the fore carriage 4. A shaft 42 connected to the power take-off shaft of the tractor transmits power for actuating the conveyers.
Patent GB-254296-A (GB)
Title: Improvements in multi stage disc turbines
IPC: F01D1/02
Filed: 1926-06-16
Abstract: 254,296. Blumer, H. June 29, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Axial-flow type. - In at least the part of a multi-stage disc turbine working under full admission and having peripheral velocities u above 160 metres per second, ratios c0/u between the absolute steam velocity from the guide blades co and the peripheral velocity are chosen less than 2 and the outlet angles of the guide and rotor blades are greater than 20‹.
Patent GB-200076-A (GB)
Title: Improvements in air controlling members for wick burners
IPC: F23D3/00
Filed: 1923-06-11
Abstract: 200,076. Cleveland Metal Products Co., (Assignees of Chadwick, L. S.). June 29, 1922, [Convention date]. Wick burners, annular; flame spreaders and deflectors.-An air-controlling member or flame spreader comprises a flange 30 having a downwardly extending portion 31 and a lip 32 immediately above the wick, and a body 20 formed by an annular enclosure 20 extending within the inner wick tube and so spaced relatively to the flange 30 that some of the air rising through the wick tube is diverted through the body on to the underside of the flange and outwardly between the flange and the wick. The flange and body are connected by a central tubular element 10 which also carries a downwardly, and outwardly extending top 36 spaced from the flange 30 by lugs 38 leaving a restricted air space in the same horizontal plane as openings 40 in the section 11 of the element 10. The flange 30 is carried by a shoulder 14 on the element 10. The body 20 may have a vertical outer wall spaced from the inner wick tube and with perforations 53, an inwardly extending top with perforations 54 and a lower sloping wall with perforations 52, and this lower wall may be attached to lower section 12 of the central element 10 by indentations at the lower edge thereof. An annular bead may be formed at the junction of the vertical and bottom walls of the body 20 resting on a span member 5 to which the spreader is latched by means of a pin 45 and locking elements 7 as described in Specification 213,293. Ascending air escapes through openings 40 and a restricted passage formed by the top and flange and issues as a continuous sheet, thus shielding the spreader from the flame. Other air currents escape through perforations 51, 50, and air rising through perforations 52 is deflected by the abutment 16 out from beneath the flange 30, imparting suitable shape to the flame. Condensation of vapours in the space between the wick and body is prevented by air issuing through perforations 53, 54. Specification 206,545 is also referred to.
Patent GB-234652-A (GB)
Title: An improved pump for liquids of great density
IPC: F04B1/20
Filed: 1924-06-24
Abstract: 234,652. Marks, E. C. R., (Borletti Fratelli). June 24, 1924. Revolving - cylinder pumps; cam - actuated pumps ; stroke, varying.-In a pump for liquids of great density, the pistons 3 engage rings 6, 7 mounted in similar inclined pivoted sockets 25, 26 arranged at each end of the pump respectively. The stroke is varied by adjusting the inclination of the sockets which are provided with toothed sectors 29 which engage circular, rack-like teeth 31 on a longitudinally-adjustable screwed shaft 33.
Patent GB-734724-A (GB)
Title: Improvements relating to probe-electrodes
Inventor: EVANS JEFFERY CHARLES
IPC: G01F23/24
Filed: 1953-06-04
Abstract: 734,724. Electric indicating systems. SIMON, Ltd., H. April 27, 1954 [June 4, 1953], No. 15400/53. Class 40 (1). An electrode for use with electronic capacity. relay type sensing devices for determining the level of material inside a bin comprises a close-wound self-supporting helical spring 1, covered with a plastic insulating sleeve 2 and supported by insulating spacers 3 in a tubular member 5 which is clamped by nuts 10 in the wall of the bin with the spring 1 projecting into the storage space. Thus when the bin is being loaded, the spring 1 will bend under impact but always return to its normal condition.
Patent GB-435922-A (GB)
Title: Improvements in and relating to a thread pull-off for buttonhole sewing machines
IPC: D05B73/12
Filed: 1935-05-27
Abstract: 435,922. Sewing-machines. HUGHES, R. M., 72, Cannon Street, London.-(International Button Hole Sewing Machine Co. ; 502, Harrison Avenue, Boston, U.S.A.) May 27, 1935, No. 15413. [Class 112] The under-threac and stay cord pull of in a button hole sewing-machine of the turret type is operated by a cam part on the main cam which con trols the operations o the machine. The work-clamps, stitch forming mechanism and slit cutter are the same as usual in turre machines. The pull off arm 28 for the under-thread 12 an( stay cord is pivoted on an extension 29 of the stud 16. The arm 28 is retained in position by a spring 31. The thread and cord are pulled by a hook extension 34 of the arm 28. The pull-off is normally retained in retracted position by a spring 36, one end of which is anchored to the arm 28 and the other to the turret. A stop finger 38 engaging the turret 8 limits its retracting movement. The pull-off movement is imparted to the arm 28 by a cam 40 on the main cam 41 via a follower 47, a lever 43 on a shaft 45, a plunger 50, a finger 52 and an arm 53 on the hub 30 of the arm 28. An adjustment may be made between the lever 43 and plunger 50 to vary the amount of thread pulled off.